Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2024 12 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 12/26/2024   08:12:55   (   0.02,-104.71) (  -0.56,-102.22)  283.66                80
 12/27/2024   20:34:48   (  -0.02,-104.67) (  -0.64,-107.52)  324.37                80
 12/28/2024   20:18:42   (  -0.02,-104.67) (   0.37,-102.98)  192.67                80
 12/30/2024   08:40:27   (   0.02,-104.71) (   0.82,-108.24)  402.70                80
 12/31/2024   08:19:01   (   0.02,-104.70) (  -0.19,-103.70)  113.73                80
 01/01/2025   20:40:54   (  -0.02,-104.65) (  -0.98,-109.00)  495.31                80
 01/02/2025   20:24:48   (  -0.01,-104.65) (   0.04,-104.46)   21.55                80
 01/05/2025   08:27:46   (   0.00,-104.69) (   0.11,-105.19)   56.34                80
 01/06/2025   08:06:20   (  -0.00,-104.69) (  -0.92,-100.65)  460.32                80
 01/07/2025   20:28:12   (  -0.00,-104.64) (  -0.28,-105.94)  148.41                80